Answer Key
UPSC Prelims 2016, GS Paper 1: Answer Key and Subject-Wise Analysis
100 questions, cross-verified against the official UPSC answer key. Conducted 7 August 2016 (Series A, booklet code B-APM-P-CKB).
Subject distribution
Counted directly from the question bank, not estimated, so these numbers match exactly what you will see if you filter the practice list yourself.
| Subject | Questions | Share |
|---|---|---|
| Economy | 27 | 27% |
| Environment | 21 | 21% |
| Current Affairs | 18 | 18% |
| History | 14 | 14% |
| Science & Technology | 8 | 8% |
| Geography | 5 | 5% |
| Polity | 5 | 5% |
| Art & Culture | 2 | 2% |
Difficulty breakdown
Easy
29
Medium
50
Hard
21
Free
12
free to answer
Member
88
answer gated behind sign-in
Standout questions
These made aspirants pause, either because they were unusually difficult, unusually novel, or because they signal a shift in how UPSC is framing questions.
Q5 · Science & Technology
LiFi: Light Based Data Transmission
LiFi, transmitting data through visible light rather than radio waves, was still a genuinely emerging technology in 2016, tested here well before it became a familiar name, a reminder that Science and Technology questions often arrive years ahead of a topic becoming common knowledge.
Practise this question →Q10 · Art & Culture
Kalidasa's Malavikagnimitra
Naming the actual author and work, Kalidasa's Malavikagnimitra, rather than testing Sanskrit literature in general, rewards knowing specific texts rather than a broad sense that classical Sanskrit drama exists.
Practise this question →Q39 · History
Decipherment of Ashokan Edicts
James Prinsep's decipherment of the Ashokan edicts is the kind of foundational historiography fact, how we actually came to read Ashoka's inscriptions at all, that sits behind the syllabus rather than in it, and rewards genuinely broad historical curiosity.
Practise this question →Q45 · Environment
Newly Discovered Banana Species (Musa indandamanensis)
A newly discovered banana species from the Andamans is exactly the kind of fresh, single-year biodiversity finding that only shows up in the paper it was discovered near, impossible to prepare for except by staying current that year.
Practise this question →Q65 · Art & Culture
Ajanta Caves and Mahabalipuram
The one question in this year's answer key that needed a tie-break re-read during verification, two independent transcriptions disagreed on a single cell before a targeted high-resolution check settled it. A genuinely close call on rock-cut monuments across two different sites, periods and traditions.
Practise this question →Key takeaways
Economy was the heaviest subject by a wide margin, 27 of 100 questions, over a quarter of the paper, the same Economy-heavy pattern seen across nearly every year in this bank.
Environment reached 21 questions, its second highest count of any year analysed after 2019's 18, spanning wildlife habitats, climate mechanisms and river basin governance, another reminder this subject rewards real breadth.
Current Affairs carried 18 questions, many of them scheme and international-summit questions tightly tied to 2015 and 2016's actual news cycle (UDAY, Mission Indradhanush, the Paris INDCs, the SDR basket expansion), underlining how much this subject rewards staying current over static revision.
This is the third consecutive year sourced directly from upsc.gov.in via the Wayback Machine, and a genuinely rare find since UPSC's own listing pages don't index a 2016 answer key at all, this file sat outside their normal archive but carries their standard official template.
What to read next
Concepts from this paper that already have a study note behind them.